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MAR 30/2020
INSTALLATION MANUAL OPERATION MANUAL
KANNAD 406 AF / AF-H / AF (6D)
© 2020 Orolia S.A.S. All rigths are strictly reserved.
C. 406 and 121.5 MHz transmission test
(1) ELT-Antenna link
ELT -Antenna link can be checked by testing VSWR.
Orolia S.A.S. recommends the use of SWR3000 VSWR meter manufactured
by PROCOM or IFR 4000 Opt1 manufactured by AEROFLEX.
Refer to manufacturer’s user manual for a VSWR measurement.
(2) 406 MHz
This test must be carried out with a COSPAS-SARSAT decoder.
• Perform self-test (Press RESET and TEST on the RCP or switch ELT from
OFF to ARM).
• Check with the COSPAS-SARSAT decoder that, except for the 5th and the
6th digits, the decoded message is identical to the programmed message.
NOTE:The message transmitted during self-test sequence always begins with
FF FE D0 whereas a programmed message begins with FF FE 2F.
Example of message programmed in ELT:
FF FE 2F 53 C3 24 97 38 0B A6 0F D0 F5 20
Example of same message decoded by a COSPAS-SARSAT decoder:
FF FE D0 53 C3 24 97 38 0B A6 0F D0 F5 20
(3) 121.5 MHz
IMPORTANT: Authority only allows this test to be conducted within the
first five minutes after any hour and limits the the transmitter audio
modulation of the 121.5 MHs signal to three sweeps of the 121.5 MHz
signal.
This test must be carried out with a VHF receiver.
• Tune VHF receiver to 121.5 MHz;
• Start transmission:
- either on ELT: ON position;
- or on the RCP: ON position (the ELT shall be in the ARM position);
• Listen to the 121.5 MHz "sweep tone";
• Stop transmission:
- either on ELT: OFF or ARM position;
- or on the Remote Control Panel: press TEST and RESET (the ELT shall
be in the ARM position).
CAUTION: WHEN ACTIONING THE ARM/OFF/ON SWITCH, PULL LEVER
TO UNLOCK AND SET TO POSITION.
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